Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1991-11-15
1997-05-20
Chin, Wellington
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
H04B 1006
Patent
active
056317603
ABSTRACT:
The invention relates to a heterodyne receiver, preferably for multichannel reception, especially for the reception of optical signals, in which the received signal is mixed with an oscillator signal of an oscillator in a mixing stage, to generate an intermediate frequency in an intermediate frequency stage (IF stage). According to the invention, the frequency (f.sub.LO) of the oscillator is tuneable discontinuously in jumps (Sp1, Sp2), and the intermediate frequency stage is tuneable continuously.
REFERENCES:
patent: 4885753 (1989-12-01), Okai et al.
patent: 5023950 (1991-06-01), Tsushima et al.
patent: 5134509 (1992-07-01), Olshansky et al.
Y.C. Chung, et al., "Frequency-Locking of a 1.5 .mu.m DFB Laser to an Atomic Krypton Line Using Optogalvanic Effect", Electronic Letters, 4 Aug. 1988, vol. 24, No. 16.
S. Sudo, et al., "Frequency-Stabilized DFB Laser Module Using 1.53159 .mu.m . . . ", IEEE Photonics Tech. Letters, vol. 1, No. 10, Oct. 1989.
Von Otto Strobel et al., "Optischer Uberlagerungsempfang--eine Ubersicht" Frequenz 41, 8, 1987, Germany, pp. 201-208.
Bachus et al, "Coherent Optical Multi-Channel Subscriber Line", ISSLS '86, 3 Oct. 1986, pp. 205-209.
ALCATEL N.V.
Bacares R.
Chin Wellington
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